Re: Question on magnetic star (off topic)

sno ( sno@GroupZ.net )
Fri, 02 Oct 1998 23:42:35 -0400

Jim...since there were six hours from a relatively close
supernova, does that mean. because of the extreme distance of
this star we can expect a neutrino burst at some future
time....
and can we calculate the mass from this burst when it arrives ??....to
verify the estimated mass of neutrino we have now....steve

Jim Farrer wrote:
>
> Dear "sno"
> Several years ago, an astronomer returning from lunch at Cerro Tollolo
> (sp?) observatory in Chile noticed a star shining where none should be.
> He checked, and sure enough, no such bright star should have been there.
> Reported it instantly, and is thus the discoverer of a super nova. Due to
> his fast notification and our great world wide comm systems, I have read
> that the Neutrino detection teams all over the world were able to prepare
> for and register the arrival of the neutrino burst some 5 or 6 hours
> later. Recently it has been found that one of the three neutron types
> carries a very small amount of mass, thus cannot travel at exactly light
> speed. The other two types are also expected to be found to posses mass.
> Can anyone else verify or correct what I've so hazily recalled?
>
> Jim Farrer
>
> sno wrote:
>
> > Was wondering about the x-rays and gamma rays from the magnetic star
> > that arrived
> > 27 Sep....I assume that they were traveling at speed of light, are
> > there any other
> > particles that may have been emitted by this burst, that may arrive at
> > a later time ???
> >
> > If so, is there any chance that they could reach the earths surface, I
> > understand that
> > the x-rays and gamma rays were absorbed by the
> > atmosphere....thanks...steve opelc